C11111211113313112113313331313331323133313331333133313232321323311   >>    C1111121111331311211331333131333132313331333133313331323232132331   <<    C11111211113313112113313331313331323133313331333133313232321323313   >>      C11111211113313112113313331313331323133313331333133313232321323312   >>